-er bbb bbe bbi bbl bbr be- beb bee bei bel ber bez bi- bib bie bii bil bir biz blb ble bli bll blr blz brb bre bri brl brr brz bze bzr bzz ebb ebe ebi ebl ebr eeb eee eel eer eib eie eii eil eir elb ele eli ell elr elz erb ere eri erl err erz eze ezr ezz ibb ibe ibi ibl ibr ibz ie- iee iei iel ier iib iie iii iil iir il- ilb ile ili ill ilr ilz ir- irb ire iri irl irr ize izi izz lbb lbe lbi lbl lbr leb lee lei lel ler lez lib lie lii lil lir liz llb lle lli lll llr llz lrb lri lrr lrz lzi lzr rbb rbe rbi rbl rbr re- reb ree rei rel rer rez rib rie rii ril rir riz rle rli rll rlr rrb rri rrl rrr rzb rze zbb zbl zbr zeb zee zel zer zez zib zie zil zir ziz zlr zrl zzr zzz